[Ironpython-users] IronPython, Daily Digest 10/26/2013

[CodePlex]

Hi ironpython,

Here's your Daily Digest of new issues for project "IronPython".

In today's digest:ISSUES

1. [New issue] Importing .NET types causes ImportExceptions (zipimport handler)

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ISSUES

1. [New issue] Importing .NET types causes ImportExceptions (zipimport handler)
http://ironpython.codeplex.com/workitem/34602
User sopelt has proposed the issue:

"When hosting IronPython in a C#/.NET application the first import of a .NET type (and possibly non-zip python modules?) causes an internally thrown and ignored IronPython.Runtime.Exceptions.ImportException having not a Zip file as its message.

This seem to happen during initial construction of the zipimporter.

In situations where third-party libraries are being debugged or profiled in a project using IronPython this can cause lots of unwanted exceptions and complicate development.

A minimal example could look like:
namespace ConsoleApplication
{
    using IronPython.Hosting;

    class Program
    {
        static void Main(string[] args)
        {
            var e = Python.CreateEngine();
            var source = e.CreateScriptSourceFromString(@"from System import Guid");
            var result = source.Execute();
        }
    }
}

with the resulting stack at the time of the unwanted exception as
>   IronPython.Modules.dll!IronPython.Runtime.ZipImportModule.zipimporter.zipimporter(IronPython.Runtime.CodeContext context, object pathObj, System.Collections.Generic.IDictionary<object,object> kwArgs) Line 142    C#
    [Native to Managed Transition]  
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.NewInstruction.Run(Microsoft.Scripting.Interpreter.InterpretedFrame frame) Line 73    C#
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.Interpreter.Run(Microsoft.Scripting.Interpreter.InterpretedFrame frame) Line 126  C#
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.LightLambda.Run4<System.Runtime.CompilerServices.CallSite,IronPython.Runtime.CodeContext,object,object,object>(System.Runtime.CompilerServices.CallSite arg0, IronPython.Runtime.CodeContext arg1, object arg2, object arg3) Line 165 C#
    System.Core.dll!System.Dynamic.UpdateDelegates.UpdateAndExecute3<IronPython.Runtime.CodeContext,object,object,object>(System.Runtime.CompilerServices.CallSite site, IronPython.Runtime.CodeContext arg0, object arg1, object arg2) Unknown
    IronPython.dll!IronPython.Runtime.PythonContext.Call(IronPython.Runtime.CodeContext context, object func, object arg0) Line 2827    C#
    IronPython.dll!IronPython.Runtime.Operations.PythonCalls.Call(IronPython.Runtime.CodeContext context, object func, object arg0) Line 30 C#
    IronPython.dll!IronPython.Runtime.Importer.FindImporterForPath(IronPython.Runtime.CodeContext context, string dirname) Line 884 C#
    IronPython.dll!IronPython.Runtime.Importer.ImportFromPathHook(IronPython.Runtime.CodeContext context, string name, string fullName, IronPython.Runtime.List path, System.Func<IronPython.Runtime.CodeContext,string,string,string,object> defaultLoader) Line 836   C#
    IronPython.dll!IronPython.Runtime.Importer.ImportFromPath(IronPython.Runtime.CodeContext context, string name, string fullName, IronPython.Runtime.List path) Line 818  C#
    IronPython.dll!IronPython.Runtime.Importer.ImportTopAbsolute(IronPython.Runtime.CodeContext context, string name) Line 622  C#
    IronPython.dll!IronPython.Runtime.Importer.ImportModule(IronPython.Runtime.CodeContext context, object globals, string modName, bool bottom, int level) Line 262    C#
    IronPython.dll!IronPython.Modules.Builtin.__import__(IronPython.Runtime.CodeContext context, string name, object globals, object locals, object fromlist, int level) Line 108   C#
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.FuncCallInstruction<IronPython.Runtime.CodeContext,string,object,object,object,int,object>.Run(Microsoft.Scripting.Interpreter.InterpretedFrame frame) Line 812   C#
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.Interpreter.Run(Microsoft.Scripting.Interpreter.InterpretedFrame frame) Line 126  C#
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.LightLambda.Run7<System.Runtime.CompilerServices.CallSite,IronPython.Runtime.CodeContext,object,string,IronPython.Runtime.PythonDictionary,IronPython.Runtime.PythonDictionary,IronPython.Runtime.PythonTuple,object>(System.Runtime.CompilerServices.CallSite arg0, IronPython.Runtime.CodeContext arg1, object arg2, string arg3, IronPython.Runtime.PythonDictionary arg4, IronPython.Runtime.PythonDictionary arg5, IronPython.Runtime.PythonTuple arg6) Line 282 C#
    System.Core.dll!System.Dynamic.UpdateDelegates.UpdateAndExecute6<IronPython.Runtime.CodeContext,object,string,IronPython.Runtime.PythonDictionary,IronPython.Runtime.PythonDictionary,IronPython.Runtime.PythonTuple,object>(System.Runtime.CompilerServices.CallSite site, IronPython.Runtime.CodeContext arg0, object arg1, string arg2, IronPython.Runtime.PythonDictionary arg3, IronPython.Runtime.PythonDictionary arg4, IronPython.Runtime.PythonTuple arg5) Unknown
    IronPython.dll!IronPython.Runtime.Importer.ImportLightThrow(IronPython.Runtime.CodeContext context, string fullName, IronPython.Runtime.PythonTuple from, int level) Line 64    C#
    IronPython.dll!IronPython.Runtime.Operations.PythonOps.ImportWithNames(IronPython.Runtime.CodeContext context, string fullName, string[] names, int level) Line 1805    C#
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.FuncCallInstruction<IronPython.Runtime.CodeContext,string,string[],int,object>.Run(Microsoft.Scripting.Interpreter.InterpretedFrame frame) Line 764   C#
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.Interpreter.Run(Microsoft.Scripting.Interpreter.InterpretedFrame frame) Line 126  C#
    Microsoft.Dynamic.dll!Microsoft.Scripting.Interpreter.LightLambda.Run1<IronPython.Runtime.FunctionCode,object>(IronPython.Runtime.FunctionCode arg0) Line 66    C#
    IronPython.dll!IronPython.Compiler.RuntimeScriptCode.InvokeTarget(Microsoft.Scripting.Runtime.Scope scope) Line 79  C#
    IronPython.dll!IronPython.Compiler.RuntimeScriptCode.Run() Line 55  C#
    Microsoft.Scripting.dll!Microsoft.Scripting.SourceUnit.Execute() Line 249   C#
    Microsoft.Scripting.dll!Microsoft.Scripting.Hosting.ScriptSource.Execute() Line 143 C#
    ConsoleApplication2.exe!ConsoleApplication.Program.Main(string[] args) Line 11  C#
    [Native to Managed Transition]  
    mscorlib.dll!System.AppDomain.ExecuteAssembly(string assemblyFile, System.Security.Policy.Evidence assemblySecurity, string[] args) Unknown
    Microsoft.VisualStudio.HostingProcess.Utilities.dll!Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()   Unknown
    mscorlib.dll!System.Threading.ThreadHelper.ThreadStart_Context(object state)    Unknown
    mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx)   Unknown
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx)   Unknown
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) Unknown
    mscorlib.dll!System.Threading.ThreadHelper.ThreadStart()    Unknown
"
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